Car-ventilator



UNITED STATES PATENT OEEIGE,

J. A. CALDWELL, OF SPRINGFIELD, MASSACHUSETTS.

CAR-VENTILATOR.

Specification forming part of Letters Patent No. 57,470. dated August 28, 1866.

To all whom it may concern;

Be it known that I, J. A. CALDWELL, of Springfield, Hampden county, Commonwealth of Massachusetts, have invented certain Improvements in Car-Ventilators; and I do hereby declare that the following is a full and eX- act description thereof, reference bein g had to the accompanying drawings, and to letters of reference marked thereon.

In the drawings, Figure l is a front View, Fig. 2 a vertical section, Fig. 3 a top view, of a ventilator constructed according to my invention.

My improvements will readily be seen from the construction of in y invention, which I will now describe.

I form on the outside of the car a frame, A, and a similar one on the inside, B. These frames are connected by a tin case or tube, C, or similar connection 5 and my improvements consist in the manner of arranging this case i in the side of the car, and also in attaching the flaps or wings D D to the outside of the car at c a, and to each other by the rod b,and in the manner of fastening the door of the ventilator by means of the latch or catch formed of the piece c passing through the door and the rubber spring d, which is so formed as to operate on the catch-piece c on both sides of the pivot e.

My improvements in the arrangement ofthe case or connection C consist in forming the same on a slant or bevel outward, as shown in the drawings, and in interposing the rubber packing g between the case and the inner and outer frames, A B.

The object of the arrangement ofthe win gs D D, connected by the rod b, as described, is that the motion of the car may operate them automatically, so that they may be in the position shown in Fig. 3 when the car goes in the direction of the arrow, so that cindcrs, smoke, Ste., may be excluded from the car, and a current be formed along the outside of the car, which 'thoroughly ventilates it by drawing out the heated and impure air.

rIhe connection C is arranged, as shown, on a slant, for the purpose of shedding what water may get into the interior of the wall of the car, and the rubber packingis placed between the case C and the wall, so as to exclude this moisture from the ventilator-case.

My spring-catch is formed, as described, with the rubber spring pressing on each side of the pivot, so that the projection h mayhook over the frame, fastening the door to the frame when closed, and the projection lo also hooks over some part of the car when the door is opened, fastening it open.

In this manner I form a neat, simple, and compact ventilator, and consequently cheaply built and little liable to get out of order.

Now, having described my invention, what I claim as new, and desire to secure by Letters Patent, is

The arrangement of the wings D D on the outside of the case C, in combination with the rod b, packing g, spring d, and catch c, snb stantially as described.

J. A. CALDWELL.

Witnesses J. B. GAEDINER, J. E. FULLER. 

